const { preBind, postBind } = require("../../lib/utils/relate");
const { LOG_TYPE } = require("../../common/constants");
const {
  decryptWeixinData,
  getWeixinCache,
  getWeixinAccessToken,
} = require("../../lib/utils/weixin");
const { initWeixin } = require("../../lib/third-party");
const { ERROR } = require("../../common/error");

/**
 * 通过微信绑定手机号
 * @tutorial https://uniapp.dcloud.net.cn/uniCloud/uni-id-pages.html#bind-mobile-by-mp-weixin
 * @param {Object} params
 * @param {String} params.encryptedData   微信获取手机号返回的加密信息
 * @param {String} params.iv              微信获取手机号返回的初始向量
 * @param {String} params.code            微信获取手机号返回的code
 * @returns
 */
module.exports = async function (params = {}) {
  /**
   * 微信小程序的规则是客户端应先使用checkSession接口检测上次获取的sessionKey是否仍有效
   * 如果有效则直接使用上次存储的sessionKey即可
   * 如果无效应重新调用login接口再次刷新sessionKey
   * 因此此接口不应直接使用客户端login获取的code，只能使用缓存的sessionKey
   */
  const schema = {
    encryptedData: {
      required: false,
      type: "string",
    },
    iv: {
      required: false,
      type: "string",
    },
    code: {
      required: false,
      type: "string",
    },
  };
  const { encryptedData, iv, code } = params;
  this.middleware.validate(params, schema);

  if (!encryptedData && !iv && !code) {
    return {
      errCode: ERROR.INVALID_PARAM,
    };
  }

  const uid = this.authInfo.uid;

  let mobile;
  if (code) {
    // 区分客户端类型 小程序还是App
    const accessToken = await getWeixinAccessToken.call(this);
    const weixinApi = initWeixin.call(this);
    const res = await weixinApi.getPhoneNumber(accessToken, code);

    mobile = res.purePhoneNumber;
  } else {
    const sessionKey = await getWeixinCache.call(this, {
      uid,
      key: "session_key",
    });
    if (!sessionKey) {
      throw new Error("Session key not found");
    }
    const res = decryptWeixinData.call(this, {
      encryptedData,
      sessionKey,
      iv,
    });

    mobile = res.purePhoneNumber;
  }

  const bindAccount = {
    mobile,
  };
  await preBind.call(this, {
    uid,
    bindAccount,
    logType: LOG_TYPE.BIND_MOBILE,
  });
  await postBind.call(this, {
    uid,
    bindAccount,
    extraData: {
      mobile_confirmed: 1,
    },
    logType: LOG_TYPE.BIND_MOBILE,
  });
  return {
    errCode: 0,
  };
};
